15 - Collections and Generics
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Practice Questions
Test your understanding with targeted questions
What is a Collection in Java?
💡 Hint: Consider grouping items together.
Name one implementation of the List interface.
💡 Hint: Think of a dynamic-sized collection.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a List in Java allow?
💡 Hint: Think about sequences and repetitions.
True or False: A Set in Java can contain duplicate elements.
💡 Hint: Consider the basic definition of a Set.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given a list of integers, write a Java method that returns a Set of unique values. Discuss its advantages based on your understanding of Sets.
💡 Hint: Consider using HashSet's add() method.
Create a generic method that reverses an array of any type. Show how generics improve the flexibility of your code.
💡 Hint: Think about how the method should handle type parameters.
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